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3 years ago

When y⁷ is multiplied by y⁹ the answer is?

Physics

1 answer:

Allushta [10]3 years ago

5 0

Answer:

y^16

Explanation:

who need to add the exponents only

7 + 9 = 16

therefore, the answer is y^16

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Help ASAP! I'm taking a test! thank you all xoxo

Stels [109]

Answer:

<h2><em><u>atoms can form new substances </u></em></h2>

5 0

3 years ago

In a double-slit interference experiment, which of the following actions (perhaps more than one) would cause the fringe spacing

frozen [14]

Answer:

The correct option is a , c

Explanation:

Generally the fringe spacing is mathematically defined as

$y = \frac{m \lambda D}{d}$

Where y is the fringe spacing

m is the order of the fringe

$\lambda$ is the wavelength

D is the distance between the slit and the screen

d is the distance between the slit

Now in order to increase the fringe spacing can do the following

Increase the wavelength
increase the distance from the slit to the screen
Decrease the distance between the slit

The following action would increase the fringe spacing because the from the question these parameters are directly proportional to the fringe spacing

3 0

3 years ago

a parent swings a 18.5 kg child in a circle of radius 1.05m, making 5 revolutions in 13.4s. what centripetal acceleration does t

Zolol [24]

Answer: $0.146 m/s^{2}$

Explanation:

The <u>centripetal acceleration</u> $a_{c}$ of an object moving in a uniform circular path is given by the following equation:

$a_{c}=\frac{V^{2}}{r}$ (1)

Where:

$V$ is the tangential velocity

$r=1.05 m$ is the radius of the circle

On the other hand, the tangential velocity is expressed as:

$V=\omega r$ (2)

Where $\omega$ is the angular velocity, which can be found knowing the child makes 5 revolutions in 13.4s:

$\omega=\frac{5 rev}{13.4 s}=0.37 rev/s$ (3)

Substituting (3) in (2):

$V=(0.37 rev/s)(1.05 m)$ (4)

$V=0.39 m/s$ (5)

Substituting (5) in (1):

$a_{c}=\frac{(0.39 m/s)^{2}}{1.05 m}$ (6)

Finally:

$a_{c}=0.146 m/s^{2}$

6 0

3 years ago

Read 2 more answers

The diagram below shows how sunlight is radiated back into the Earth's atmosphere as heat (infrared radiation).

Juliette [100K]

The diagram that shows how sunlight is radiated back into the Earth’s atmosphere as heat(infrared radiation) is of the Greenhouse effect.

The greenhouse effect is a natural phenomenon that occurs on Earth and heats up our atmosphere.

The name of this effect is derived from a greenhouse, which is used to grow crops in a special environment.

A greenhouse is basically a house that is made up of glass. The glass allows heat to enter the house but it does not allow the heat to escape to the outside thus keeping the greenhouse warm.

Some gases that are responsible for this effect are known as greenhouse gases. These gases are carbon dioxide, methane, chloro- fluoro carbons, etc.

These gases trap the heat of the sun and raise the temperature of Earth thus causing global warming.

Thus, the diagram that shows how sunlight is radiated back into the Earth’s atmosphere as heat(infrared radiation) is of the Greenhouse effect.